At least in the US, trademark law is use it or lose it. If you are not selling products bearing your trademark, you are not actually engaging in "trade" with yo

At least in the US, trademark law is use it or lose it. If you are not selling products bearing your trademark, you are not actually engaging in "trade" with your "mark." Copyright law is automatic, but it does complicate things if the original author of a copyrighted work is unknown or difficult to contact. For licensing, you need a name and address of an entity to license from. The whole idea behind Banksy's art is that he's anonymous, so precludes the idea of licensing his work. > you want to sell banksy greeting cards, you need to get a license from banksy That is exactly the sort of thing opening a store with tangible goods will allow.